Please only ask questions in the forum I will not answer questions sent to me directly via PMRemember we want information.......................no information no helpThe use of crystal balls & mind reading is not supported

rpdom wrote:
The tutorial is a bit misleading. It is mixing up two packages: wiringpi and raspi-gpio. Wiring Pi has the gpio command and can be installed with sudo apt-get install wiringpi
pcmanbob has already pointed out the other one.